NO156557B - DEVICE FOR Curing of STRESSED BODIES. - Google Patents
DEVICE FOR Curing of STRESSED BODIES. Download PDFInfo
- Publication number
- NO156557B NO156557B NO811479A NO811479A NO156557B NO 156557 B NO156557 B NO 156557B NO 811479 A NO811479 A NO 811479A NO 811479 A NO811479 A NO 811479A NO 156557 B NO156557 B NO 156557B
- Authority
- NO
- Norway
- Prior art keywords
- string
- wall sections
- press
- pressed
- force
- Prior art date
Links
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000005418 vegetable material Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/28—Moulding or pressing characterised by using extrusion presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Working-Up Tar And Pitch (AREA)
- Polymerisation Methods In General (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Description
Oppfinnelsen angår en innretning til herding av strengpressede legemer, fortrinnsvis av vegetabilske materialer, f. eks. avfallsprodukter fra treindustrien, blandet med et bindemiddel, bestående av en oppvarmbar herdekanal som er anordnet i tilknytning til en strengpressedyse på en stempel/ strengpresse, tilpasset dysetverrsnittet og dannet av flere veggavsnitt som ikke berører hverandre, idet minst to veggavsnitt er bevegbare på tvers av strengens fremføringsretning ved hjelp av spennelementer eller lignende. The invention relates to a device for curing string-pressed bodies, preferably of vegetable materials, e.g. waste products from the wood industry, mixed with a binding agent, consisting of a heatable curing channel which is arranged in connection with a string press nozzle on a piston/string press, adapted to the nozzle cross-section and formed by several wall sections that do not touch each other, with at least two wall sections being movable across the string's forward direction using clamping elements or the like.
Slike innretninger er kjent fra DE-PS 25 35 989. Veggavsnittene blir som regel oppvarmet og oppviser en overflateform som tilsvarer den pressede strengen. Such devices are known from DE-PS 25 35 989. The wall sections are usually heated and exhibit a surface shape that corresponds to the pressed string.
Ved den tidligere kjente innretningen er friksjonen og dermed avstøtningskraften fra veggavsnittene som presses an mot strengen under presseslaget redusert. Oppfinnelsen går ut på å fremskaffe en innretning som sørger for en større avstøtnings-kraf t på veggavsnittene mot strengen, og i en videreutvikling under bruk godt styrbar avstøtningskraft. With the previously known device, the friction and thus the repulsive force from the wall sections that are pressed against the string during the pressing stroke is reduced. The invention is to provide a device which ensures a greater repulsion force on the wall sections against the string, and in a further development during use well controllable repulsion force.
Oppgaven er løst ved hjelp av oppfinnelsen ved at de bevegbare veggavsnittene er forbundet med på tvers av strengpresseaksen virkende spennelementer og er pressbare mot strengen, og at det i tillegg ved enkelte av de bevegbare veggavsnittene angriper en kraftkilde som utøver en kraft som er rettet mot pressebevegelsen på de under presseslaget innpressede veggavsnittene, og at kraftkildens kraft er styrbar i avhengighet av trykket i strengpressen. Under presseslaget støtter altså den pressede strengen seg fast mot de anpressede veggavsnittene på hvilke kraften fra kraftkilden virker. Dersom trykket i pressesylinderen i strengpressen når en maksimal nominell verdi, så overvinnes avstøtningskraften og veggavsnittene beveger seg på grunn av sin lengdebevegelighet sammen med strengen i frem-føringsretningen. Etter avslutning av fremskyvingen, avlastes anpressingstrykket fra spennelementene. Veggavsnittene blir deretter stilt tilbake til utgangsstilling ved hjelp av kraftkilden . The task is solved with the help of the invention in that the movable wall sections are connected by tension elements acting across the string press axis and are compressible against the string, and that in addition some of the movable wall sections are attacked by a force source which exerts a force directed against the press movement on the wall sections pressed in during the press stroke, and that the force of the power source is controllable depending on the pressure in the string press. During the pressing stroke, the pressed string thus rests firmly against the pressed wall sections on which the force from the power source acts. If the pressure in the press cylinder in the string press reaches a maximum nominal value, then the repulsive force is overcome and the wall sections move due to their longitudinal movement together with the string in the forward direction. After completion of the advance, the pressing pressure is relieved from the clamping elements. The wall sections are then returned to their initial position using the power source.
Ved bearbeidelse av forskjellige materialer, særlig When processing different materials, in particular
ved svært uhomogene materialsammensetninger, er det nødvendig med meget forskjellige pressetrykk og å oppnå en ønsket, like-formet tetthet på det strengpressede legemet. Oppfinnelsen sørger derfor for at kraften fra kraftkilden er styrbar i avhengighet av trykket i pressesylinderen i strengpressen, og dermed i avhengighet av tettheten som er en funksjon av trykket. Den kraften som overføres til veggavsnittene av kraftkilden kan være styrt ved hjelp av i og for seg kjente styre- eller reguleringsinnretninger, f.eks. slik at de, når pressetrykket blir større enn en bestemt nominell verdi (som igjen tilsvarer en bestemt tetthet),blir gjort tilsvarende mindre og omvendt. Dette kan f.eks. skje ved at trykket i den som f.eks. en hydraulisk sylinder utformede kraftkilden blir nedsatt eller økt svarende til endringene i pressetrykket fra den nominelle verdien. Ifølge oppfinnelsen kan man således ved regulering av trykket oppnå en ønsket tetthet på den pressede strengen. in the case of very inhomogeneous material compositions, it is necessary to use very different pressing pressures and to achieve a desired, uniformly shaped density on the string-pressed body. The invention therefore ensures that the power from the power source is controllable depending on the pressure in the press cylinder in the string press, and thus depending on the density which is a function of the pressure. The power that is transmitted to the wall sections by the power source can be controlled by means of control or regulation devices known per se, e.g. so that, when the press pressure becomes greater than a certain nominal value (which in turn corresponds to a certain density), they are made correspondingly smaller and vice versa. This can e.g. happen by the pressure in it, which e.g. a hydraulic cylinder designed power source is decreased or increased corresponding to the changes in the press pressure from the nominal value. According to the invention, by regulating the pressure, a desired density can be achieved on the pressed string.
Veggens har en overflateform som tilsvarer formen på den pressede strengen. Ved sylindrisk tverrsnitt på strengen danner veggavsnittene f.eks. to halvsylinderskåler. Man kan naturlig-vis også tenke seg anordningen med tre eller flere sylinder-skåler som hver omfatter et tilsvarende vinkelområde for om-kretsen. Ved firkantet tverrsnitt er det nok at to motstående veggavsnitt ifølge oppfinnelsen er anpressbare og bevegelige i lengderetningen, mens de veggavsnittene som står vinkelrett på de to bevegbare er fast anordnet. Innen rammen for oppfinnelsen består imidlertid også den mulighet at det er anordnet fire bevegbare og mot hverandre anpressbare veggavsnitt rundt strengpressetverrsnittet. The wall has a surface shape that corresponds to the shape of the pressed string. In the case of a cylindrical cross-section of the string, the wall sections form e.g. two semi-cylindrical bowls. One can naturally also imagine the arrangement with three or more cylinder bowls, each of which includes a corresponding angular range for the circumference. In the case of a square cross-section, it is enough that two opposite wall sections according to the invention are pressible and movable in the longitudinal direction, while the wall sections that are perpendicular to the two movable ones are fixed. Within the scope of the invention, however, there is also the possibility that four movable wall sections that can be pressed against each other are arranged around the string press cross-section.
Oppfinnelsen skal i det følgende forklares nærmere under henvisning til tegningen som skjematisk viser en ut-førelsesform for oppfinnelsen. Tegningen viser i et plan-riss to veggavsnitt til en herdekanal 1 som er bevegbare mot hverandre i tegningens plan. De over og under tegningsplanet beliggende veggavsnittene, som omslutter streng-tverrsnittet og som enten er anordnet ifølge oppfinnelsen eller kan være fast anordnet, er for klarhetens skyld ikke vist på tegningen. In the following, the invention will be explained in more detail with reference to the drawing which schematically shows an embodiment of the invention. The drawing shows in a plan view two wall sections of a curing channel 1 which are movable towards each other in the plan of the drawing. The wall sections located above and below the drawing plane, which enclose the string cross-section and which are either arranged according to the invention or can be fixed, are not shown in the drawing for the sake of clarity.
Utløpsåpningen for en strengpresse er antydet med 2, fra hvilken materialet blir presset ut i pilens retning, dvs. i fremskyvningsretningen gjennom herdekanalen 1. Veggavsnittene 3 er lagret over ruller 4 til spennelementer 5 som i utførelseseksemplet er dannet av stempelstangen på The outlet opening for a string press is indicated by 2, from which the material is pressed out in the direction of the arrow, i.e. in the direction of advancement through the curing channel 1. The wall sections 3 are stored over rollers 4 to tension elements 5 which in the embodiment example are formed by the piston rod of
en hydraulisk eller pneumatisk sylinder 6. Sylinderen 6 a hydraulic or pneumatic cylinder 6. The cylinder 6
er festet i stasjonære stativer 7 på begge sider av herdekanalen 1. Veggavsnittene 3 kan således med påslag av sylindrene 6 med et trykkmedium presses på tvers av fremskyvningsretningen fra begge sider mot strengen. På veggavsnittene 3 angriper likeledes stempelstangen 8 for en som hydraulisk eller pneumatisk sylinder utformet kraftkilde 9 som likeledes er leddet til stativet 7. Dersom veggavsnittene 3 ved hjelp av spennelementene 5 presses mot den strengen som befinner seg i herdekanalen 1, så blir de holdt fast ved hjelp av sylindrene 9 mot presseslaget som er rettet i pilens retning, slik at strengen avstøtter seg mot veggene. Minskes trykket i kraftkilden eller dette blir overvunnet av det stigende pressetrykket, kan veggavsnittene 3 på grunn av rullelagringen 4 bevege seg fremover sammen med strengen, dvs. i tegningsplanet til høyre. are fixed in stationary racks 7 on both sides of the curing channel 1. The wall sections 3 can thus be pressed across the direction of advance from both sides towards the string by impact of the cylinders 6 with a pressure medium. On the wall sections 3, the piston rod 8 likewise attacks for a power source 9 designed as a hydraulic or pneumatic cylinder, which is also connected to the stand 7. If the wall sections 3 are pressed against the string located in the curing channel 1 with the help of the clamping elements 5, then they are held firmly by using the cylinders 9 against the pressing stroke which is directed in the direction of the arrow, so that the string pushes against the walls. If the pressure in the power source is reduced or this is overcome by the rising press pressure, the wall sections 3 can, due to the roller bearing 4, move forward together with the string, i.e. in the drawing plane to the right.
Etter endt slag, blir pressetrykket fra spennelementene 5 opphevd ved trykkavlastning resp. omkasting av anpressingssylindrene 6. Deretter blir veggavsnittene After the end of the stroke, the pressing pressure from the clamping elements 5 is lifted by pressure relief or reversing the pressure cylinders 6. Then the wall sections are
3 ved hjelp av sylindrene 9 igjen trukket tilbake mot venstre til utgangsstillingen. Som allerede nevnt kan trykket i kraftkilden dg dermed den kraft som overføres 3 by means of the cylinders 9 again pulled back to the left to the starting position. As already mentioned, the pressure in the power source can dg thus the power that is transmitted
til veggavsnittene styres slik at det oppnås en ønsket nominell verdi på pressetrykket og dermed en ønsket tetthet på det strengepressede legemet. to the wall sections is controlled so that a desired nominal value of the press pressure and thus a desired density of the string-pressed body is achieved.
Innen rammen for oppfinnelsen kan det anordnes flere slike veggavsnitt etter hverandre langs strengen. Within the framework of the invention, several such wall sections can be arranged one after the other along the string.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3016926A DE3016926C2 (en) | 1980-05-02 | 1980-05-02 | Device for curing extruded bodies |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO811479L NO811479L (en) | 1981-11-03 |
| NO156557B true NO156557B (en) | 1987-07-06 |
| NO156557C NO156557C (en) | 1987-10-14 |
Family
ID=6101505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO811479A NO156557C (en) | 1980-05-02 | 1981-04-30 | DEVICE FOR Curing of STRESSED BODIES. |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4361530A (en) |
| EP (1) | EP0039433B1 (en) |
| AT (1) | ATE3832T1 (en) |
| DE (2) | DE3016926C2 (en) |
| NO (1) | NO156557C (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE428109B (en) * | 1981-09-28 | 1983-06-06 | Mared J Ing Ab | DEVICE FOR BRIKET PRESSURES |
| US4698228A (en) * | 1984-03-29 | 1987-10-06 | Nabisco Brands | Process for extruding dough as used in producing crisp breads |
| US4659303A (en) * | 1984-03-29 | 1987-04-21 | Nabisco Brands, Inc. | Apparatus for extruding dough as used in producing crisp breads |
| EP0207064A3 (en) * | 1985-06-13 | 1988-08-03 | Schaumstoffwerk Greiner Gesellschaft M.B.H. | Calibrating device for extruded plastics material |
| JPH022565Y2 (en) * | 1985-10-21 | 1990-01-22 | ||
| NO894583L (en) * | 1989-07-17 | 1991-01-18 | Placell As | PROCEDURE FOR CELLPLAST MANUFACTURING. |
| DE9007478U1 (en) * | 1989-10-31 | 1992-01-16 | Friedrich Theysohn GmbH, 4970 Bad Oeynhausen | Floating plastic profile calibration device |
| SE468278B (en) * | 1989-11-21 | 1992-12-07 | Curt Andersson | SETTING AND DEVICE MAKING A COMPRESSABLE MATERIAL MIX BY MEANS OF A NOZZLE AND A FORMATING MOVABLE MATERIAL MAKING A LONG STRENGTH |
| US5213686A (en) * | 1991-08-26 | 1993-05-25 | Kamyr, Inc. | Compression feeder |
| RU2106968C1 (en) * | 1992-06-08 | 1998-03-20 | Бритиш Текнолоджи груп Лтд. | Method and apparatus for continuous production of extruded article |
| CA2077872C (en) * | 1993-12-20 | 1998-06-09 | Manfred A. A. Lupke | Apparatus for making annularly ribbed plastic pipe and method of making such pipe |
| CA2135267C (en) * | 1994-02-10 | 2008-02-26 | Sadao Nishibori | Synthetic wood meal, method and apparatus for manufacturing the same; synthetic wood board including the synthetic wood meal, method and apparatus of extrusion molding therefor |
| JP3658714B2 (en) * | 1996-02-09 | 2005-06-08 | アイン興産株式会社 | Pattern formation method for woody synthetic board |
| US6193919B1 (en) * | 1998-12-31 | 2001-02-27 | Wayne H. Ford | Method and apparatus for extruding shaped products from recycled plastic materials |
| US7178308B2 (en) | 2002-06-28 | 2007-02-20 | Masonite International Corporation | Composite door structure and method of forming a composite door structure |
| ES2238896B1 (en) * | 2003-02-26 | 2006-12-01 | Jose Maria Sanchez Reñasco | METHOD FOR THE MANUFACTURE OF PROFILED PARTS AND INSTALLATION FOR PRACTICE OF THE SAME. |
| US8113807B2 (en) * | 2007-08-24 | 2012-02-14 | Timothy Wilkinson | Methods and apparatus for fabricating structures |
| US7954749B2 (en) * | 2007-12-05 | 2011-06-07 | Randolph A. Dunn | Extruded cylinder with a solid wood exterior |
| DE102009032287A1 (en) * | 2009-01-20 | 2010-08-05 | Evonik Degussa Gmbh | Extrusion plant with dynamic pressure regulating braking device |
| US9487375B2 (en) * | 2010-01-19 | 2016-11-08 | Souhegan Wood Products, Inc. | Structural cylinder with conformable exterior |
| US11292172B2 (en) | 2016-02-19 | 2022-04-05 | Rochling Engineering Plastics | Ram extruding thin panels of UHMW polymers |
| US10427347B2 (en) * | 2016-02-19 | 2019-10-01 | Rochling Engineering Plastics | Ram extruding thin panels of UHMW polymers |
| US10414082B2 (en) * | 2016-02-19 | 2019-09-17 | Rochling Engineering Plastics | Ram extruding thin panels of UHMW polymers |
| US10807829B2 (en) | 2016-09-14 | 2020-10-20 | Souhegan Wood Products Inc. | Reinforced wood fiber core |
| USD876208S1 (en) | 2017-09-08 | 2020-02-25 | Souhegan Wood Products Inc. | Winding core |
| US11772315B1 (en) | 2019-08-14 | 2023-10-03 | Souhegan Wood Products Inc. | Reinforced wood fiber core and method of making thereof |
| US12497792B1 (en) * | 2021-09-03 | 2025-12-16 | The Board of Regents for the Oklahoma Agricultural and Mechanical Colleges | 3D concrete printing methods and system |
| CN113858375B (en) * | 2021-09-29 | 2022-04-05 | 东北林业大学 | MDF continuous flat pressing distributed cooperative control sequence planning method |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1775735A (en) * | 1927-05-17 | 1930-09-16 | Metropolitan Paving Brick Comp | Brick-column-forming process and apparatus |
| US2168889A (en) * | 1936-09-02 | 1939-08-08 | Bond Mfg Corp Inc | Method and apparatus for extruding materials |
| NL83740C (en) * | 1949-07-07 | |||
| DE838954C (en) * | 1950-03-18 | 1952-05-15 | Dynamit Nobel Ag | Method and device for the continuous compression of flat materials, in particular fibrous nonwovens |
| GB761228A (en) * | 1951-03-19 | 1956-11-14 | Henri Georges Roy | Improvements in or relating to apparatus for the production of artificial lumber products |
| US3092878A (en) * | 1960-08-24 | 1963-06-11 | C & S Products Company Inc | Method and apparatus for continuously forming foundry molds, cores and the like |
| FR1490887A (en) * | 1965-09-08 | 1967-08-04 | Johns Manville | Manufacturing process for fibrous products |
| NL6701289A (en) * | 1967-01-27 | 1967-04-25 | ||
| US3548452A (en) * | 1967-12-20 | 1970-12-22 | Abram Godwin Caleb | Extrusion apparatus for fabricating building units |
| DE2220553C3 (en) * | 1972-04-26 | 1975-05-22 | Bison-Werke Baehre Und Greten Gmbh & Co Kg, 3257 Springe | Continuously operating press for the production of panels, such as chipboard, fiberboard or the like |
| US3914085A (en) * | 1972-05-22 | 1975-10-21 | Dow Chemical Co | Extrusion apparatus |
| DE2332367A1 (en) * | 1973-06-26 | 1975-01-23 | Helmut Braeuning | Wood filled thermoplastic board mfr - employs a devolatilising extruder followed by a travelling press and opt sheathing or lamination units |
| US3992242A (en) * | 1974-08-23 | 1976-11-16 | Caughey Robert A | Self-feeding press for producing strip material |
| US4025262A (en) * | 1974-11-18 | 1977-05-24 | General Electric Company | Variable length extrusion die |
| US3989433A (en) * | 1974-11-18 | 1976-11-02 | General Electric Company | Apparatus for controlling resistance to extrusion of a rod-like body through a die |
| DE7525585U (en) * | 1975-08-12 | 1977-09-08 | Heggenstaller, Anton, 8891 Unterbernbach | DEVICE FOR CURING EXTRUDED BODY |
| US4124347A (en) * | 1976-07-13 | 1978-11-07 | Miller James F | Apparatus for forming synthetic logs |
| DE2714256C2 (en) | 1977-03-31 | 1984-12-20 | Anton 8892 Kühbach Heggenstaller | Device for shaping and hardening extruded bodies from mainly vegetable material mixed with a binding agent |
-
1980
- 1980-05-02 DE DE3016926A patent/DE3016926C2/en not_active Expired
-
1981
- 1981-04-15 DE DE8181102898T patent/DE3160470D1/en not_active Expired
- 1981-04-15 EP EP81102898A patent/EP0039433B1/en not_active Expired
- 1981-04-15 AT AT81102898T patent/ATE3832T1/en not_active IP Right Cessation
- 1981-04-30 NO NO811479A patent/NO156557C/en unknown
- 1981-05-06 US US06/260,928 patent/US4361530A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3160470D1 (en) | 1983-07-28 |
| ATE3832T1 (en) | 1983-07-15 |
| EP0039433A1 (en) | 1981-11-11 |
| US4361530A (en) | 1982-11-30 |
| DE3016926A1 (en) | 1981-11-12 |
| EP0039433B1 (en) | 1983-06-22 |
| NO156557C (en) | 1987-10-14 |
| NO811479L (en) | 1981-11-03 |
| DE3016926C2 (en) | 1982-08-12 |
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